Layer 3 fundamental data units containing IP addressing and routing information
Managing system states using runlevels and systemd targets for different operational modes
Understanding evil twin attacks and rogue wireless access points that bypass network security
Data center architecture including three-tier and spine-leaf designs with modern protocols
VLAN trunking with 802.1Q tagging for carrying multiple VLANs over single physical links
Layer 1 handling raw bit transmission through physical media like cables and radio waves
Protocol Data Units at each OSI layer representing encapsulated data with layer-specific headers
Application layer protocol for reliably transferring files between hosts using separate control and data connections
Working with Personal Package Archives on Ubuntu for accessing newer software versions and specialized packages
Evolution of IEEE 802.11 standards from original WiFi through WiFi 6 with technical specifications